ADOLFSSON, V. $L^2$-Integrability of Second Order Derivatives for Poisson’s Equation in Nonsmooth Domains. MATHEMATICA SCANDINAVICA, [S. l.], v. 70, p. 146–160, 1992. DOI: 10.7146/math.scand.a-12391. Disponível em: https://www.mscand.dk/article/view/12391. Acesso em: 3 may. 2024.